i dont see how this can possibly be a negative thing. the only thing i have to add is that less power would be used launching an arrow at closer range, therefore short and medium ranged shots should have damage deduction in the ballpark of -2 damage per range ajustment, with long range being the same.
you also must realize that arrows launched high in the air are alot less accurate than arrows fired strait because they change trajectory and have alot more air time for wind deviation... which does not exist, but either way, it will be like trying to hit something half way across the map. this would be excellent, however, for large crowds.